2017 KTM 250 SX, 2017 KTM 250 SX LEADER OF THE PACK The new KTM 250 SX with its all-new engine has one of the best power-to-weight ratios in the world of dirt, forming the ultimate weapon against more complex 4-stroke rivals. With the grunt to devour all sorts of tracks and terrains, and a lightweight chassis keen to skim the surface, this masterpiece of KTM s R&D and Motorsport departments is born to lead the next pack of winners that prefer premix. Features may include: ENGINE The engine of the 250 SX has been known and respected for being the most powerful 2-stroke engine in its class. But we thought the segment could use an extra push and a solid statement: 2-strokes have a future at KTM. Their outstanding power-to-weight ratio, low cost and simplicity see to that. Putting our money where our mouth is, we gave the 250 SX engine an all new architecture with a new shaft arrangement for better mass centralization, a new cylinder with twin-valve controlled power valve, a new counter balance shaft for less engine vibrations, a 5-speed transmission and a hydraulically operated DDS clutch. This compact firecracker truly outshines the competition with its ripping performance and is the right choice for lovers of low purchasing and maintenance costs. Oh, and of course don t forget that belly tingling 2-stroke symphony when you re on the pipe. CYLINDER The newly developed cylinder of the 250 SX - with a bore of 66.4mm - has all-new ports and is fitted with an overhauled power valve system. This system features a sophisticated mechanism for the lateral support exhaust ports, providing smooth and controllable power on tap. Furthermore, it s possible to change the bike s mood in seconds thanks to two supplied powervalve springs. Limitless settings for different tracks and preferences are up for grabs. Throw everything you have at it; new water jackets in the cylinder and head will take care of excess heat and reworked lateral cylinder head brackets allow a more efficient fixation of the engine to the frame via lightweight head stays. Yes, this is a serious piece of kit. ENGINE CASES These all-new die-cast engine cases feature a 8mm higher clutch shaft and a 27mm higher crankshaft, resulting in better mass centralization. Which is nice if you care about sweet rideability. In addition, it allows the implementation of a counter balance shaft. So your ride will be as relaxed as it is rapid. Plus, your new favorite engine will keep looking as fresh as the day you bought it: redesigned engine covers feature a smart surface structure in order to reduce the wear caused by the rider s boots. CLUTCH The 250 SX employs the KTM-developed DDS clutch (damped diaphragm steel) with a wear-free steel basket and extremely heat resistant clutch plates. This clever design employs a diaphragm spring instead of the usual coil sp
2016 KTM 250 SX, 2016 KTM 250 SX Unrivalled 2-Stroke Performance With enough power to excel on all sorts of tracks and terrain, combined with an extremely lightweight chassis, the 250 SX has one of the best power-to-weight ratios in motocross. The unrivalled performance of the lightweight 2-stroke engine makes it a true contender against the more complex 4-strokes. For MY 2016 the 250 SX features detail improvements and new colors and graphics, but basically retains the same chassis and engine specification as MY 2015. Features May Include: ENGINE The powerful KTM 250 SX engine unites an unbeatable power-to-weight ratio with outstanding performance and extremely easy handling. CYLINDER The cylinder of the 250 SX is fitted with a sophisticated TVC (Twin Valve Control) power valve, providing adjustable power characteristics, which can be changed within a few seconds thanks to two supplied springs offering optimal settings for different tracks and rider preference. CARBURETOR The 250 SX is fitted with a proven Keihin PWK 38S AG carburetor producing the perfect air-fuel mixture over the entire range at average conditions. For extreme temperature or altitude the setting can be tuned with supplied jets and needles according to a setting list in the manual. LINKAGE/SHOCKABSORBER The linkage system of the 250 SX features a progression curve with a high initial rate ensuring good stability. The high-end WP 5018 shock absorber guarantees outstanding response and damping characteristics and of course compression and rebound damping can be adjusted to the track conditions and the rider's preferences. FORK The fully adjustable upside-down closed cartridge fork from WP Suspension features a diameter of 48 mm and provides excellent damping characteristics. It is adjustable in rebound and compression. SEAT The ergonomically perfectly designed seat is equipped with a durable foam core, ensuring both greater comfort and higher stability. WHEELS The 250 SX is fitted with lightweight, CNC-machined hubs, high-end Excel rims and new, weight reduced spokes with lightweight aluminium nipples providing maximum stability at minimum weight. The latest MX tires from Dunlop (Geomax MX 32) have been developed from KTM factory racing in the USA, factory testing and expert rider feedback in racing. They guarantee perfect traction and outstanding performance. BRAKES High-tech Brembo brakes have always been standard equipment on KTM offroad bikes, and are combined with newly designed and weight-reduced Wave discs made by GALFER featuring also an improved heat resistance. The ultimate solution in braking technology. Weight reduction front 63 g, rear 32 g.
